Sorry, that should be &quot;Bird of Prey&quot;... &amp; now that I&#39;ve done my homework, I see that this flip-symmetrical version isn&#39;t new.<div><br></div><div>Tony Hanmer<br><br><div class="gmail_quote">On 24 July 2012 10:59, Tony Hanmer <span dir="ltr">&lt;<a href="mailto:a.hanmer@gmail.com" target="_blank">a.hanmer@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<div><br></div><div>I&#39;ve been playing with the Burning Ship fractal type in Fractint.  I changed z^2 to z^3 and came up with a version which has x-axis symmetry, though it needs rotating 45 degrees.  Is this the &quot;M-set&quot; of the Burning Ship type?  Has it been found before?  The whole fractal reminds me of a Klingon Bird of Pray, by the way.</div>

<div><br></div><div>Tony Hanmer</div><div>Tbilisi, Georgia</div><div><br></div><div><div>Begin .par file</div><div>BShip4             { ; 45 degrees &amp; symmetry</div><div>                     ; Tony Hanmer 23/7/2012</div>

<div>                     ;  Fractint Version 2099 Patchlevel 8</div><div>  reset=2099 type=formula formulafile=T-frms.frm</div><div>; paste the below formula (minus the &quot;frm:&quot;) into a new *.frm file if you like,</div>

<div>; &amp; remane T-frms.frm to that .frm name.</div><div>  formulaname=BurningShip4 passes=1</div><div>  center-mag=-0.108695/0.108695/0.4303211/1/44.999999999999993 float=y</div><div>  maxiter=250 inside=fmod sound=off</div>

<div>  colors=000&lt;8&gt;KN_MPcOSg&lt;3&gt;Xaw&lt;9&gt;CawA`w8`w&lt;3&gt;0`w&lt;9&gt;HgRJhOLiK&lt;3&gt;Sl7&lt;9&gt;ks2ms\</div><div>  2ot2&lt;2&gt;uv0ww0wu1&lt;8&gt;we9wcAwaB&lt;3&gt;wVF&lt;9&gt;ybFycFydF&lt;3&gt;zhF&lt;3&gt;`ZBVWAOUA&lt;2&gt;5M7&lt;5\</div>

<div>  &gt;Nd3Qg3Tj2&lt;3&gt;ew0&lt;12&gt;DJ0BF08C0&lt;2&gt;230000000&lt;118&gt;000</div><div>  }</div><div><br></div><div>frm:BurningShip4  { ; Tony Hanmer 23/7/2012</div><div>  z = (0,0):    ; x-axis symmetry at last, though at a 45-degree angle:</div>

<div>  z = abs(z)  ; the &quot;M-set&quot; of the Burning Ship fractal?</div><div>  z = z * z * z - pixel ; instead of z^2, z^3.</div><div>  |z| &lt; 100</div><div> }</div></div><div>End .par file</div>
</blockquote></div><br></div>